Speed-indicator for boats.



W. GOBLET. SPEED INDICATOR FOR BOATS.

APPLICATION FILED JUNE4,1910.

1,007,280, Patented Oct. 31, 1911.

wpnm---n UNITED STATES PATENT OFFICE.

WILLIAM GOBLET, OF ROSEBANK, NEW YORK.

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Specification Letters Patent.

Patented Oct. 31, 1911.

' Application filed June 4, 1910. Serial No. 564,920.

To all whom it may concern:

Be it known that I, WILLIAM GoBLnT, a citizen of the United States, andresldent of Rosebank, in the county of Richmond andkinds, andparticularly oats driven by mechanical power, such as motor boatssteamships and the'like.

In carrying out my invention I provide an indicating device with meansto operate the same controlled by the pressure of the water in which theboat floats due to the propulsion of the boat through such water.

In the specific embodiment of my invention illustrated in theaccompanying drawings, I provide a casing containing a movable memberconnected with an index or pointer, and one side of said member, is incommunication, by a pipe extending through the boat, with the waterbeneath in such position that as the boat travels forwardly the waterflowing into the pipe will create a pressure upon the movable member toopcrate the index in accordance with the speed of the boat.

Reference is to be had to the accompanying drawings forming part hereof,wherein,

Figure 1 1s a. cross section of a boat equipped with my improvement;Fig. 2 is a side elevation of my improved speedmeter partly broken away,and Fig. 3 is a vertical section thereof at right angles to Fig. 2.

The numeral 1 indicates a suitable casing shown comprising a lowersection 1 and an upper section 1 secured together by screws 2 passingthrough the flanges of said sections, and within said casing isa movablemember, shown in the form of a flexible diaphra 3, shown secured betweenthe flanges of said section.

At 4 is a rod shown passing freely through casing l. and secured todiaphragm 3 by nuts 5 screwed on said rod clamping the diaphragm air andwater tight, so that said rod will rise and fall with the diaphragm. Rod4 is shownpassing through the adjustable bushing 6 screwed into thethreaded upper openingl of casing 1 and preferably with such freedom asto permit the free passage of air into and from the upper cham-. ber ofthe casing above the diaphragm.

At 7 is a spring shown coiled around rod 4 within the upper chamber ofthe casing and bearing at'oneend against bushing 6 and at the other endagainst one nut 5 tending normally to keep the diaphragm and rod 4depressed. By rotating bushing 6 the effective tension of spring 7 maybe varied as required for regulation. Rod 4 is shown passing freelythrough the lower apertured hub 1 of section 1 of the casing, and said.hub is shown connected with pipe 8 that leads into the water adjacentthe boat.

At 9 is an indicator of any suitable construetion. In the exampleillustrated I have shown a dial 9 having suitable graduations toindicate the speed, such as figures tor-epresent miles per hour, and at10 is an index or pointer carried by shaft 11 provided with a pinion 12in mesh with rack 13 provided on rod 4, a suitable bracket 14 serving asa bearing for shaft 11, which is also shown supported to rotate in thefront plate of the indicator 9, the latter being shown supported uponcasing section 1". It will be understood however, that the indicator orindex may be of any suitable or well known construction customary forindicating .speed, distances, volume and the like.

The indicator may be secured upon any desired part of the boat orvessel, and pipe 8 being connected tightly with hub 1 is carried to theexterior of the boat, as by passing through the bottom thereof, and thelower .end of said ipe is directed forwardly toward the bow o the boat,as at 8, so as to receive ressure of the water when the boat travelsorwardly. Assuming that the parts are in the normal position shown inFlg. 3, indicating zero, and that the-boat travels forwardly, thepressure of the water through pipe 8 will be in proportion to the s eedof the boat, andsuch water pressure, either directly upon the diaphragm,or against air interposed in pipe 8 and in the chamber beneath 'thediaphragm, will cause the diaphragm to bulge upwardly, thereby raisingrod 4 and by means of the gearing front of dial 9 in accordance with thepressure beneath the diaphragm, which will be according to the speed ofthe boat. Air in the chamber above the diaphra is permitted to escapepast rod 4 an to return through the same course as re uired to maintainthe proper air balance 0 thediaphragm. The casing section 1 may be pro-''device is lowered into the fluid in the tank,

barrel or the like, the pressure of the fluid in pipe 8 operatingagainst the air therein will cause the upward bulging of the diaphragmand will indicate on the dial or indicator, which is suitabl adapted forthe purpose,

.the depth of fluld. Again, with the device fitted to a tank, barrel orthe like, the amount of fluid poured into the tank or barrel will bemeasured in accordance with the pres sure thereby created in pipe 8 bythe inflow of such fluid into the tank. Cock 15 may be opened at anytime to equalize pressure in the chamber beneath the diaphragm, and thenclosed before the fluid is charged into the tank.

Changes may be made in the details of construction set forth, within thescope of the appended claim, without departing from the spirit thereof.

Having now described my invention what I claim is:

In a speed indicator for boats, the combination of a casing comprisingupper and lower concavo-convexed members secured together at theirperipheries and each said member having an apertured hub, a pressuresupply pipe, the lower hub being screwthreaded into the pressure supplypipe, a diaphragm secured between said upper and lower. members of thecasing, said diaphragm being apertured in alineme'nt with theapertures-0f the, upper and lower hubs, a rod having a rack thereonpassing through the aperture of said diaphragm and clamped thereto, ahelical. spring surrounding said rod and exerting a pressure upon thediaphragm, a bushing screw-threaded into the aperture of the upper huband surrounding said rod and adapted to increase or diminish theeffective pressure of the spring upon the diaphragm, an indicator platehaving a dial thereon secured directly to the casing and having alaterally extending bracket, a shaft carried by the bracket, said shaftcarrying an index adapted to coact with the indicator plate forindicating the pressure exerted upon the diaphragm, said shaft carryinga pinion in cooperative relation with the rack whereby said pinion isr0- tated for actuating the index.

Signed at New York city, in the county of New York, and State of NewYork, this 3rd day ofJune A. D. 1910. I

' LIAM GOBLET.

Witnesses:

WILLIAM A. W. GRIER, T. F. BOURNE.

